ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The microstructure and mechanical properties including wear resistance of Al2O3-basednanocomposites with 5 vol% of Cu and Ni-Co dispersions were investigated. Al2O3/Cu and Al2O3/Ni-Co nanocomposites were fabricated by hydrogen reduction and sintering process using metaloxide and metal nitrates. The composites showed homogeneous microstructures with nano-sizedmetal dispersions and enhanced fracture strength and toughness compared with monolithic Al2O3. Inparticular, high toughness and hardness were measured for the Al2O3/Ni-Co nanocompositeconsolidated by PECS. A minimum wear coefficient of 2.33 x 10-5 mm3/Nm was obtained for theAl2O3/Ni-Co nanocomposite, while the monolithic Al2O3 showed a value of 2.0 x 10-5 mm3/Nm.Wear behavior is discussed in terms of microstructure and mechanical properties of thenanocomposites
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/51/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.317-318.369.pdf